Spring-balance.



P. GATUGUI.

SPRING BALANCE.

APPLICATION FILED AUG. 13, 1912.

Patented June 3, 1913.

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UNITED STATES PATENT OFFICE.

PLINY CATUCCI, NEWARK, NEW JERSEY, ASSIGNOR TO A. F. MEISSELIBACH & BROTHER, A CORPORATION OF NEW JERSEY.

SPRING-BALANCE.

Specification of Letters Patent.

Patented June 3, 1913.

To all whom z't may concern:

Be it known that I, PLINY CA'rUooI, a citizen of the United States, residing inthe city of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Spring-Balances, of which the following is a specification.

My invention is an improvement in the structure of the patent to Meisselbach and Meisselbach, No. 756,175, granted Mar. 29, 1904, and has for its objects the general improvement of the structure in the way of simplifying the st-ructure,'reducing the number of parts, and thereby the cost of manufacture.

The novel method of connecting the ring rid supporting hook to the balance spring, and their arrangement in connection with the inclosing sectional telescoping case are the principal features of my invention.

The accom anying drawing fully illustrates an em odiment of my improvement though other specific mechanism may be employed to carry out the details thereof.

Figure 1. is a side elevation of the balance. Fig. 2. is a similar View partly in section of the balance spring and its connecting pieces. Fig. 3. is a sectional view of the balance. Fig. 4:. is a side elevation of the scale tube. Fig. 5. is a plan View of one of the connecting pieces.

The balance comprises the outer tube or case 1, the inner or scale tube 2, the tare or adjustment sleeve 3, inclosing the spring 1, and the supporting ring 5, and hook 6, with their connecting pieces 7 and 8, The tube 1, is closed at the top with the exception of the slot 9, through which passes the connecting piece 7, through the aperture 10,01? which,

passes thesplit ring 5, as shown. The tare sleeve 3, is made of a diameter to fit quite snugly into the open end of the tube 1, but is capable of being slid in or out to adjust for tare, or to set the index scale 11 on the tube 2 at 0, when desired. A knurled bead 12, is provided on the sleeve 3, to afford a finger hold and facilitate adjustment. The scale tube 2 is closed at the bottom except for the slot 13 through which passes the lower connecting piece 8, and through the aperture 14: in said connecting piece the suspending hook 6 is passed as shown. Upon the side of the tube 2 is the scale 11, marked into units and fractional units of weight, as pounds, kilograms, etc.

The spring 4 is of the usual closed helical type, and is provided at its upper and lower ends with the connecting pieces 7 and 8, which are provided with the lateral projections 15, 15, 16, 16. The pieces are exactly alike and their connection with the springis made in the same way for each. The body portion of each piece has a width equal to the inside diameter of the spring 4, so that said spring may be twisted or screwed up on the body of the connecting piece with several of the convo-lutions of the spring located between the projections-15, 15,16, 16. This method of connection atfords a quick and easy method for adjusting. the spring for accuracy; for as the index scale 11 isusually a fixed scale and thesprings themselves rarely have the same elastic tension, it is only necessary in adjusting for accuracy, to screw one or both of the connecting pieces a little farther in or out of the spring.

The projections 15, 15, upon the two pieces 7 and 8 are sufficiently wide to form a bearing upon the inner sides of the closed ends of the tubes 1 and 2, so that the apertured ends of said pieces may extend through the slots 9 and 13, respectively which are too short to permit the passage of the projections; so that when the ring 5 and hook 6 are in place the parts are locked together.

It will be noted that each partis made complete in itself prior to assembling, so that in assembling no tools of any kind are required except to close the ring 5 and the eye 17 in the hook 6, when they have been respectively connected to the pieces 7 and 8. The parts as they are shown may be made in large quantities by the cheapest of known processes, viz: press and die works and thus the cost of assembling thus is reduced to a minimum.

I claim:

1. In a spring balance, the combination of a balance spring, apertured connecting pieces adjustably secured to the ends of said spring, a tubular case and a scale tube for inclosing said spring, with said connecting pieces extending outside of said case and and tube.

2. In a spring balance, the combination of a tubular case having one of its ends closed and slotted, a fiat connecting piece having an aperture in one end thereof and lateral shouldered projections thereon, said apertured end adapted to pass through and closely fit the slotted end of said case with said projections bearing upon theinside of said closed end, and a suspending ring in the aperture of said connecting piece outside of said case.

3. In a spring balance, the combination of a scale tube having one of its ends closed and slotted, a flat connect-ing piece having an aperture in one end thereof and lateral shouldered projections thereon said apertured end adapted to pass through and closely fit the slotted end of said tube, with said projections bearing upon the inside of said closed end, and a supporting hook secured in the aperture of said connecting piece outside of said tube.

4. In a spring balance, the combination of a tubular case having one of its ends closed and slotted, a scale tube having one of its ends closed and slotted, a pair of flat connecting pieces each having-an aperture in one end and lateral shouldered projections, said apertured ends respectively adapted to pass through and closely fit the slotted end of said, tubular case and of said scale tube'respectively, with the corresponding projections bearing upon the inside of the closed end of said tube and case, a spring adjustably secured to said connecting pieces and external means for locking said connecting pieces respectively to said tube and case.

In witness whereof I have hereunto set my hand this. 12th day of August 1912.

} PLINY CATUCCI.

In presence of ANTHONY VASsELLI, Louis M. SANDERS. 

